Removing some (but not all) dead pytest fixtures (#15782) #11125

Job	Run time
awx-operator	12m 48s
dev-env	9m 32s
api-test	13m 45s
awx_collection integration (a-h, ^[a-h])	12m 55s
awx_collection sanity (stable-2.17)	1m 32s
awx_collection integration (i-p, ^[i-p])	15m 1s
api-migrations	10m 12s
awx_collection integration (r-z0-9, ^[r-z0-9])	15m 22s
api-lint	1m 28s
api-swagger	4m 47s
awx-collection	2m 27s
api-schema	7m 22s
combine awx_collection integration coverage	29s
	1h 47m 40s

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